By Surendra | June 10, 2020 0 Comment 0% 10 Created by Surendra Current Electricity Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 25 If the efficiency of a machine is to be high what should be low ? kWh consumed Input power Losses True component of power 2 / 25 With rise in temperature the resistance of semi-conductors decreases first increases and then decreases increases remains constant 3 / 25 Which one of the following does not have negative temperature co-efficient ? Mica Rubber Aluminium Paper 4 / 25 A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb the heater output will remain same heater will burn out decrease increase 5 / 25 An electric filament bulb can be worked from D.C. supply only Battery supply only All above A.C. supply only 6 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Current Power Voltage 7 / 25 All of the following are equivalent to watt except (amperes) ohm amperes/volt amperes x volts joules/sec. 8 / 25 Varistors are insulators resistors with zero temperature coefficient non-linear resistors carbon resistors 9 / 25 For which of the following ‘ampere second’ could be the unit ? Power Reluctance Energy Charge 10 / 25 Electric current passing through the circuit produces luminous effect thermal effect chemical effect magnetic effect 11 / 25 The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms what is the resistance of the other ? 64 Q 48 Q 36 Q 18 Q 12 / 25 In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes using same supply mains none of the above length of heating element should be decreased length of heating element has no effect on heating if water length of heating element should be increased 13 / 25 Resistance of a material always decreases if temperature of material is increased number of free electrons available become more none of the above is correct temperature of material is decreased 14 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Copper Brass Aluminum Carbon 15 / 25 The resistance of a conductor varies inversely as area of cross-section resistivity length temperature 16 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Capacitor Reactor Inductor Resistor 17 / 25 Insulating materials have the function of storing very high currents preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires conducting very large currents 18 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Voltages are additive Elements have individual currents Power are additive Currents are additive 19 / 25 Two resistors are said to be connected in series when total current equals the sum of branch currents same current passes in turn through both sum of IR drops equals the applied e.m.f. both carry the same value of current 20 / 25 A resistance having rating 10 ohms 10 W is likely to be a carbon resistor variable resistor metallic resistor wire wound resistor 21 / 25 With rise in temperature the resistance of pure metals increases remains constant decreases first increases and then decreases 22 / 25 Resistance of a tungsten lamp as applied voltage increases increases remains same none of the above decreases 23 / 25 Which is the best conductor of electricity ? Silver Carbon Copper Iron 24 / 25 Ohm’s law is not applicable to circuits with low current densities high voltage circuits vacuum tubes carbon resistors 25 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between conducting electrons mutual collisions between metal atoms collisions between conduction electrons and atoms the release of conduction electrons from parent atoms कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। NameEmailPhone NumberDistrictSchool/Coaching Name Your score is LinkedIn Facebook VKontakte 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
